I use White Lightning's dry lube which is wax based and it keeps the chain looking clean and running great. Goes on like a wet lube but quickly dries leaving an invisible waxy film. I reapply at about 75-100 mile intervals which is probably more than needed. Like you, I'm a big proponent of wax based lubricants and I don't see myself ever going back to oils. You might want to give it a try to simply things for your trip.